Upon checking out the rest of the lot and other stones from the same
supplier we found that a few (3 or 4) had the same fine polishing
lines on the pavilion facets after cleaning.
We also found that the same detergent took the polish off some
charoite and chrysocolla cabs, don’t know if these were coated with
something as well (could be waxed?) or if it actually damaged the
stones. It does not appear to be a colored coating of the so called
"azotic" type, this is regular blue topaz, the cooked and irradiated
stuff that’s a couple bucks a carat wholesale. Since it was only a
few stones out of a good sized lot we are still selling it though we
are inspecting each stone for signs of this strange treatment closely
That’s where it’s at for now, I guess we’ll be louping topaz before
buying it from now on.
Thanks for being Orchid,